Comparison of
Minimum Building Requirements:
Manufactured vs. Modular

# MANUFACTURED or HUD Homes MODULAR or UBC or IRC Homes
1 2" x 6" #3 Floor Joists or better 2" x 10" #2 Floor Joists (truss TJI available)
2 2" x 6" Single Perimeter Rim Joist 2" x 10" Double Perimeter Rim Joist
3 R-11 Floor Insulation R-11 Floor Insulation Perimeter Only
4 16" Overhang 16" Overhang
5 30# Roof Load (HUD Rafter) 30# Roof Load w/ 5/12 Roof Pitch (Heavier Rafter)
6 Load Bearing Walls (Sidewall & Marriage Wall)
Will have Single 2X Top Plate & 1 2X Bottom Plate
Load Bearing Walls (Sidewall & Marriage Wall)
Will Have Double 2X Top Plate & 1 2X Bottom Plate.
7 Double Flat 2" x 6" Window & Door Headers Triple Vertical 2" x 6" Window & Door Headers w/Jack Studs
8 24" On Center Marriage Wall 16" On Center Marriage Wall
9 2" x 4" Interior Wall Studs 24" O.C. 2" x 4" Interior Wall Studs 16" O.C.
10 R-26 or R-30 Roof Insulation R-38 Roof Insulation
11 Std. Plumbing Auto Vents 3" Roof Venting (No Auto Vents)
12 Std.Through the Roof Plumbing Vents Through The Roof Plumbing Vents w/3" Diameter Vents
13 Std. 1½" P-Traps & Waste Pipe Sizes 2" P-Traps & Waste Pipes For Tubs & Showers
14 No Water Shut Offs Required Water Shut Offs Required @ All Plumbing Fixtures
15 No Frost Free Exterior Faucet Exterior Frost Free Faucet Required
16 Non Anti Scald Valves On Tubs & Showers Anti Scald Valves On All Tubs & Showers
17 No Over Flows On Tubs All Tubs Have Overflows
18 Main Water Shut Off Not Required ¾" Main Water Shut Off Required
19 Std. Washer Drain & Vent IRC 2" Washer Drain & Vent
20 Smoke Detectors In All Bedrooms & Living Areas Are Protected from Kitchen IRC Smoke Detector Inside Each Bedroom & Outside Each Bedroom Area
21 Up To 15 Electrical Receptacles Per Circuit No More Than 10 Electrical Receptacles Per Circuit
22 Receptacles Near Sink Above Countertops Are GFI Protected All Receptacles Above Countertop Are GFI Protected
23 Amp Connectors On All 12-2 and 14-2 Wires, Junction Boxes Used On All Others Electrical Junction Boxes W/Plain Covers Will Be Installed At Front & Rear Of Home. If Fuse Box Is On The Kitchen Side, 4 Boxes Are Required. If Fuse Box Is On Opposite Side of Kitchen, 6 Boxes Are Required.
24 Standard Exterior GFI Exterior Receptacles Will Have A Bubble Cover That Will Close With A Cord Plugged In.
25 Electrical Receptacles 12" From Edge Of Countertops And Spaced 72" Apart Electrical Receptacles 12" From Edge Of Countertops & Spaced 24" Apart
26 All Romex Wire Secured w/Standard Staples All Romex Wire Is Secured with Non-Metallic Staples
27 100 Amp Electrical Service 200 Amp Long Panel Electrical Box (BRK2040B200PKW)
28 Standard HUD Required Breakers Use Full Slot (¾") 120-Volt Breakers & 2 slot (1½") 220-Volt Breakers. No double Slot Breakers Allowed.
29 Sealed Combustion Gas Water Heater w/Fresh Air Intake From Outside Home Water Heater( per ubc)
30 No Attic Access Required Attic Access Is Required and Must be 22" x 30" Minimum w/30" Unobstructed Head Room & An Attic Light w/Switch
Please note: These are just some of the main points between products, other items adjust according to local municipality. State, Local and 3rd Party Inspection Fees change based on placement location of the home. Please get with Country Homes for the latest details about codes in your market area.



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